John p



No. 750,932. PATENTED FEB. 2, 1190.4.

J. P. BAIRD. I

OVERHEAD VEHICLE WASHER.

. AP PLIOATION ILED MAY 23, 1903. N0 MODEL.

Fil. I

Z as .2Q/W Y l 5y John' P aimz A fr0/mf ya UNITED STATES Patented February 2, 1904.

PATENT OFFICE.

JOHN P. BAIRD, OF WHITESTONE, NEW YORK, ASSIGNOR TO WILLIAM l). v JOHNSON, LEVERETT E. RHODES, OF HARTFORD, CONNECTICUT, AND WILLIAM I. LYMAN, OF WHITESTONE, NEW YORK.

AOVERHEAD VEHICLE-WASHER.

SPECIFICATION forming part of Letters Patent No. 750,932, dated February 2, 1904.

Application filed May 23, 1903. Serial No. 158,407. (No model.) I

To all whom/.it may con/cern:Y

Be it known that I, JOHN P. BATRD, a citizen of the United States, residing at Whitestone, in the county of Queens and State of New York, have invented certain'new and useful Improvements in Overhead Vehicle-Washers, of which the following is a specification, such as will enable those skilled in the art to which it appertains to make and use the same.

The object of this invention is to provide an improved coupling for overhead vehicle-Washers of the class shown and described in United States Letters Patent No. 624,423, granted to me May 2, 1899, a further object being to provide a coupling for vehicle-washers of this class which shall be water-tight at all times, while permitting the distributing-pipe to freely swing or turn in a horizontal plane; and with these and other objects in view the invention consists in the construction, combination, and arrangement of parts hereinafterdescribed and claimed.

The invention is fully disclosed in the following specification, of which the accompanying drawings form a part, in which the separate parts of my improvement are designated by suitable reference characters in each of the views, and in which- Figure 1 is a side elevation of an overhead carriage-washing device provided with my improvement, and Fig. 2 a central vertical section thereof.

In the practice of my invention I provide a tube a, which is closed at its upper end and provided with a plate a2, whereby it may be connected with a ceiling or other overhead support a3, and one side of which is provided with a branch tube co4, through which water is supplied. Revolubly mounted on the lower end of the tube a is a clamp or holder b, composed of two parts b2, connected at the ends by plugs or screws b3, with which are connected rods c, composed of two parts connected by turnbuckles c2 and provided with rings, bands, or other supports c3.

Connected with the lower end of the tube a, and preferably screw-threaded thereinto, is a pipe cl, on the lower end of which is a coupling e, with which are connected tubes e2 and e3, which are supported by the rings or bands 03, and in the form of construction shown one of these tubes, preferably the tube e3, is provided with a flexible water-supply tube et, the other tube e2 being closed by a cap e5.

The connection of the coupling e with the tube d constitutes the chief feature of this invention and is made in the following manner: A sleeve f, screw-threaded at both ends, is provided, and this sleeve is screwed into the coupling e, as shown at f2, said coupling be ing provided with a screw-threaded neck f3 for this purpose.Y The upper end of the sleeve f is alsoprovided with a cap g, through which the tube d passes, and in the upper end of the sleeve f and held therein by the cap g is placed a metal band it, below which is a suitable packing 7l, preferably of fibrous material, and below this packing a collar j is screwed onto the lower end of the tube Z and the packing t' is compressed between the collar j and band it, and the adjacent ends of said collar and said bands are reamed out, as shown in Fig. 2. The lower end of the sleeve f is provided with an inwardly-directed flange or rim f i, and placed on the lower end of the tubed below the collar j is a flexible and elastic packingring ZJ, the upper portion of which is contracted, so as to closely fit the tube d, while the lower end thereof is enlarged, so as to closely fit the sleeve j. As thus constructed it will be seen that the coupling e with the pipes e2 and e3, the sleeve f and the cap yg are all free to turn on the parts t, t', j, and It', while the said latter parts closely iit the interior of the sleeve f and the tube d, while the collar j is secured to said tube. This makes a coupling which is perfectly water-tight at all times, and the tubes e2 and e3 may be swung inra horizontal openposition orl turned entirely around without in any way interfering withv the coupling or disarranging the parts thereof.

In the form of construction shown the tube e2 forms an air-pressure chamber in which back pressure occasioned by the manipulation of the washer-tube is exhausted or taken up,

and this also serves to prevent leakage through the coupling in the rotation thereor` and in the operation of the washer, the air-cushion serving to relieve the pressure on the coupling which would otherwise be occasioned.

It will be understood that an ordinary spray or washer is connected with the pipe e4, and the water being supplied through the pipe the operation of this device will be apparent and will be the same as other devices of this class and similar to that of the invention described and claimed in the patent hereinbefore referred to. It will also be understood that the separate parts of the device may be covered with any suitable material to prevent water from condensing thereon and dripping therefrom, and the entire device or apparatus may be incased, if desired, for this and other purposes.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is

l. In an apparatus of the class described a depending pipe, a sleeve mounted thereon and threaded at both ends, a pipe-coupling connected with the lower end of said sleeve, a cap connected with the upper end of said sleeve, a band placed in the upper end of said sleeve, a collar placed in said sleeve below said band, packing material placed between said band and said sleeve and an annular flexible packing placed below said collar and within said sleeve and enlargedl outwardly and downwardly and the upper portion of which ts said pipe, said sleeve being also provided at its lower end with an inwardly-directed annular ange or rim, substantially as shown and described.

2. In an apparatus of the class described a depending pipe, a sleeve mounted thereon and threaded at both ends, a pipe-coupling connected with the lower end of said sleeve, a

cap connected with the upper end of said sleeve, a band placed in the upper end of said sleeve, a collar placed in said sleeve below said band, packing material placed between said band and said sleeve and an annular flexible packing placed below said collar and within said sleeve and enlarged outwardly and downwardly and the upper portion which fits said pipe, said sleeve being also provided at its lower end with an inwardly-directedA annular iiange or rim, said collar being connected with said pipe, substantially as shown and described.

3. In an apparatus of the class described a depending pipe, a sleeve mounted thereon and threaded at both ends, a pipe-coupling connected with the lower end of l said sleeve, a cap connected with the upper end of said sleeve, a band placed in the upper end of said sleeve, a collar placed in said sleeve below said band, packing material placed between said band and said sleeve and an annular exible packing placed below said collar and within said sleeve and enlarged outwardlyV and downwardlyA and the upper portion which tits said pipe, said sleeve being also provided at its lower end with an inwardly-directed annular iange or rim, said collar being connected with said pipe, and said coupling being provided at one end with a closed pipe and at the opposite end with another pipe and a valve-tube connected therewith, substantially as shown and described. l

In testimony that I claim the foregoing as my invention I have signed my name, in presence of the subscribing witnesses, this 7th day of March, 1903.

JOHN P. BAIRD.

I/Vitnesses:

F. A. STEWART, C. E. MULREANY. p 

